|EF||Autofocus lens designed both for Canon full frame and APS-C SLR cameras.|
|L||Professional lens with high quality optics and robust build. Meets the highest standards and provides excellent performance and flawless image quality unachievable with traditional optical technologies.|
|IS||The lens is equipped with optical image stabilizer. The stabilizer allows to increase the shutter speed by several stops and shoot handheld in such lighting conditions and at such focal lengths where without stabilizer you will have to use tripod, decrease the shutter speed and/or increase the ISO setting which can lead to blurry and noisy images.|
|USM||The lens is equipped with ultrasonic motor to provide very fast and virtually silent autofocus. Learn more|
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|Maximum format:||35mm full frame|
|Diagonal angle of view:||107°-63.4° (35mm full frame)
93.6°-51.9° (Canon APS-H)
80.7°-42.5° (Canon APS-C)
|Lens construction:||16 elements in 12 groups, including 3 ASPH, 2 UD|
|Closest focusing distance:||28 cm|
|Number of diaphragm blades:||9|
|Type of autofocus motor:||Ultrasonic (Canon EF)
|Full-Time Manual Focus:||Yes|
|Stabilizer features:||Panning Detection
|Stabilizer efficiency:||up to 4 stops|
|Maximum diameter x Length:||Ø82.6 x 112.8 mm|
|Materials:||Metallic barrel, metallic mount|
|Weather sealing:||Dust-proof and water-resistant housing|
|Fluorine coating:||Front and rear elements|
|Filter size:||77 mm|
The lens barrel is of moderate weight, dust-proof and water-resistant, made of metal. The lens mount is metallic.
The lens has rather narrow focal range. Formally it is the disadvantage, however in practice it contributes to a good compensation of optical aberrations and equally high image quality at the entire focal range.
The lens features AF/MF focus mode switch.
|AF||Autofocus mode with Full-Time Manual Focus.|
|MF||Manual focus mode.|
The lens uses front filters with standard size of 77 mm which are easy to find. However, filters of such size are more expensive and mainly used with professional lenses.
The filter thread does not rotate during focusing which allows convenient use of different types of filters (including but not limited to polarizing and gradient).
Aspherical elements (ASPH, XA) minimize spherical aberration, astigmatism, coma and ensure excellent sharpness and contrast even at maximum aperture.
Low dispersion elements (AD, ED, LD, HLD, SD, UD etc) and fluorite elements minimize chromatic aberrations and ensure excellent sharpness and contrast even at maximum aperture.
The lens features optical image stabilizer, which, according to the manufacturer, compensates up to 4 stops of shutter speed. Theoretically it allows to capture sharp images of static subjects at shutter speeds down to 1/2 second at focal length of 35 mm(*).
* without the need to increase ISO sensitivity and/or use a tripod, at the same lighting conditions and at the same aperture
The image stabilizer does not have any specialized mode of operation, but is capable of automatic detection of panning and then corrects camera shake only in one direction.
|Camera||Canon EOS 5D mark II||Canon EOS 5D mark III|
|Sensor size||36×24 mm||36×24 mm|
|Distortion at 16 mm||-3.41 %||-4 %|
|Distortion at 35 mm||+1.62 %||+1.11 %|
|Vignetting at 16 mm F/4||-2.12 EV||-2.17 EV|
|Vignetting at 35 mm F/4||-1.34 EV||-1.52 EV|
|Efficiency of Image Stabilizer||up to 3.3 stops|
|User Manual. English, Adobe PDF, 1 MB|
|Prime lenses for Canon EOS DSLR cameras|
Alternatives (AF, 14-40 mm)
|Canon EF 17-40mm F/4L USM||2003||⊗|
|Tokina AT-X Pro AF SD 17-35mm F/4 (IF)||2011||⊗|